ATxmega32A4U Atmel Corporation, ATxmega32A4U Datasheet - Page 375

• Manufacturer Part Number: ATxmega32A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega32A4U

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8331A–AVR–07/11
• Bit 6:3 – MUXPOS[3:0]: MUX selection on Positive ADC input
These bits define the MUX selection for the positive ADC input.
Table 28-14 on page 375
Table 28-13. ADC MUXPOS Configuration when INPUTMODE[1:0] = 00 (Internal) is used
Table 28-14. ADC MUXPOS Configuration when INPUTMODE[1:0] = 01 (Single-ended),
Depending on device pin count and feature configuration the actual number of analog input pins
may be less than 16, refer to the device data sheet and pinout description for details.
• Bit 2:0 – MUXNEG[2:0]: MUX selection on Negative ADC input
These bits define the MUX selection for the negative ADC input when differential measurements
are done. For internal or single-ended measurements, these bits are not in use.
MUXPOS[3:0]
MUXPOS[3:0]
0100-1111
0000
0001
0010
0011
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
INPUTMODE[1:0] = 10 (Differential) or INPUTPMODE[1:0] = 1 (Differential with
gain) is used.
Group Configuration
TEMP
BANDGAP
SCALEDVCC
DAC
Group Configuration
PIN0
PIN1
PIN2
PIN3
PIN4
PIN5
PIN6
PIN7
PIN8
PIN9
PIN10
PIN11
PIN12
PIN13
PIN14
PIN15
shows the possible input selection for the different input modes.
Description
Temperature Reference
Bandgap voltage
1/10 scaled Vcc
DAC output
Reserved
Description
ADC0 pin
ADC1 pin
ADC2 pin
ADC3 pin
ADC4 pin
ADC5 pin
ADC6 pin
ADC7 pin
ADC8 pin
ADC9 pin
ADC10 pin
ADC11 pin
ADC12 pin
ADC13 pin
ADC14 pin
ADC15 pin
Atmel AVR XMEGA AU
Table 28-13 on page 375
and
375